I'm supposed to go on a diet.

我应该节食。

youdao

I’m supposed to go on a diet / get a raise.

我应该节食/涨工资。

youdao

To make myself look pretty again, I decide to go on a diet.

为了让自己更漂亮，我决定减肥。

youdao

Politically, governors and mayors find that exhorting voters to go on a diet is far easier on the stomach than, say, pushing a soda tax or junk-food ban.

WSJ: Can a Whole City Stick to a Diet? Fat Chance

Going on an information diet with a high-end cable sports package is like trying to go on a diet while subscribing to a daily fried chicken and ice cream delivery service.

FORBES: Info Overload Isn't the Issue. Consumption is the Real Problem.

Facebook and its affiliates are busy churning the data generated from every keystroke to figure out who of us is likely to go on a diet, get pregnant, change political affiliation, question our sexuality and more.

CNN: The joke may be on Zuckerberg